Carrier 17/19EX Specifiche Pagina 1

17/19EX50/60 HzCentrifugal Liquid Chillerswith HFC-134aStart-Up, Operation, and Maintenance InstructionsManufacturer reserves the right to discontinue

Contents LID Operation and MenusGeneralAlarms and AlertsLID Default Screen Menu Items Menu Structure To View or Change Point StatusOverride Operations

If the configured lead chiller does not complete the start-up before the PRESTART FAULT TIMER (user configured value) elapses, then the lag chiller sh

Lag Chiller Start-Up RequirementsBefore the lag chiller can be started, the following conditions must be met: 1. Lead chiller ramp loading must be com

Lag Chiller Shutdown Requirements The following conditions must be met in order for the lag chiller to be stopped. 1. Lead chiller COMPRESSOR MOTOR LO

If the lag chiller faults when the lead chiller is also faulted, the standby chiller reverts to a stand-alone CCN mode of operation. If the lead chill

Auto. Restart After Power FailureWhen an autorestart condition occurs, each chiller may have a delay added to the start-up sequence, depending on its

The Ice Build Time Schedule defines the period during which ice build is active if the ice build option is ENABLED. If the Ice Build Time Schedule ove

or standby chiller for lead/lag and is actively controlled by a lead chiller. The lead chiller communicates the ICE BUILD SETPOINT, desired CHILLER ST

chilled water flowing. If the entering CHILLED WATER/BRINE TEMPERATURE increases above the ICE BUILD SETPOINT plus the RECYCLE DELTA T value, the comp

3. Remote Contacts/Ice Level Input — Termination of compressor operation occurs when ICE BUILD TERMINATION is set to CONTACTS ONLY OPTION and the remo

Attach to Network Device Control On the Service menu, one of the selections is ATTACH TO NETWORK DEVICE. This table serves the following purposes:• to

ContentsDemand LimitingMachine Timers Occupancy Schedule Safety Controls Shunt Trip Default Screen Freeze Motor Cooling Control (Hermetic Motors Only)

Attaching to Other CCN Modules If the machine PSIO has been connected to a CCN Network or other PIC controlled chillers through CCN wiring, the LID ca

Note: The LID will not automatically re-attach to the PSIO module on the machine. Press the ATTACH softkey to attach to LOCAL DEVICE and view the mach

The menu bar (Next-Previous-Select-Exit) is displayed to indicate that you have success-fully logged on.If the password is entered incorrectly, an err

Holiday Scheduling (Figure 24)The time schedules may be configured for special operation during a holiday period. When modifying a time period, the ‘‘

2. If not logged on, follow the instructions for To Log On or To Log Off. Once logged on, press NEXT until Equipment Configuration is highlighted.3. O

5. Press SELECT to enter the Data Table Select screen. This screen lists 18 holiday tables.6. Press NEXT to highlight the holiday table that you wish

8. Press NEXT or PREVIOUS to highlight the month, day, or duration.9. Press SELECT to modify the month, day, or duration.10. Press INCREASE or DECREAS

11. Press ENTER to save the changes.12. Press EXIT to return to the previous menu.INCREASE DECREASE QUIT ENTERNEXT PREVIOUS SELECT EXITClick here for

Start-Up/Shutdown/Recycle Sequence (Figure 25)Local Start-UpLocal start-up (or a manual start-up) is initiated by pressing the LOCAL menu softkey whic

RECYCLE mode. If the water/brine temperature is high enough, the start-up sequence continues on to check the guide vane position. If the guide vanes a

ContentsSpare Safety InputsSpare Alarm ContactsCondenser Pump ControlCondenser Freeze PreventionTower-Fan Relay Auto. Restart After Power FailureWater

Shutdown Sequence Shutdown of the machine can occur if any of the following events happen:• the STOP button is pressed for at least one second (the al

Certain conditions during shutdown will change this sequence:• if the COMPRESSOR MOTOR LOAD is greater than 10% after shutdown, or the starter contact

When the SOFT STOP AMPS THRESHOLD is being applied, a status message ‘‘SHUTDOWN IN PROGRESS, COMPRESSOR UNLOADING’’ is shown.Chilled Water Recycle Mod

is an operator-configured function which defaults to 5° F (3° C). This value is viewed/modified on the Service1 table. The compressor will restart whe

Safety ShutdownA safety shutdown is identical to a manual shutdown with the exception that the LID will display the reason for the shutdown, the alarm

Before Initial Start-UpJob Data Required• list of applicable design temperatures and pressures (product data submittal)• machine certified drawings• s

Remove Shipping PackagingRemove any packaging material from the control center, power panel, guide vane actuator, motor cooling and oil reclaim soleno

slushing compound on the shaft or other parts must be removed using a petroleum type solvent and observing proper safety precautions. Note: If the mot

also be stated. If either is unknown, the correct sequence can be determined in the following manner: While the motor is uncoupled from the load, star

Open Oil Circuit ValvesCheck that the oil filter isolation valves are open by removing the valve cap and checking the valve stem. (See Scheduled Maint

ContentsLoad Balancing Auto. Restart After Power Failure Ice Build Control Ice Build Initiation Start-Up/Recycle Operation Temperature Control During

prevent possible piping stress and damage during the transfer of refrigerant from vessel to vessel during the leak test process, or any time refrigera

1. If the pressure readings are normal for machine condition: a. Evacuate the nitrogen holding charge from the vessels, if present. b. Raise the machi

c. Plainly mark any leaks which are found. d. Release the pressure in the system. e. Repair all leaks.f. Retest the joints that were repaired. g. Afte

5. If no leak is found during initial start-up procedures, complete the transfer of refrigerant gas (see Pumpout and Refrigerant Transfer Procedures s

Standing Vacuum TestWhen performing the standing vacuum test, or machine dehydration, use a manometer or a wet bulb indicator. Dial gages cannot indic

Machine Dehydration Dehydration is recommended if the machine has been open for a considerable period of time, if the machine is known to contain mois

Dehydration is readily accomplished at room temperatures. Use of a cold trap (Figure 29) may substantially reduce the time required to complete the de

on the wet bulb vacuum indicator. At this temperature/pressure, isolated pockets of mois-ture can turn into ice. The slow rate of evaporation (sublima

Check Optional Pumpout Compressor Water Piping If the optional storage tank and/or pumpout system are installed, check to ensure the pumpout condenser

Inspect Wiring1.Examine wiring for conformance to job wiring diagrams and to all applicable electrical codes.2.On low-voltage compressors (600 v or le

ContentsStart-Up/Shutdown/Recycle SequenceLocal Start-UpShutdown SequenceAutomatic Soft Stop Amps ThresholdChilled Water Recycle Mode Safety ShutdownB

4. The starter for a centrifugal compressor motor must contain the components and terminals required for PIC refrigeration control. Check certified dr

Check Insulation Resistance (Hermetic Motor) Test the machine compressor motor and its power lead insulation resistance with a 500-v insulation tester

If the readings on a field-installed starter are unsatisfactory, repeat the test at the motor with the power leads disconnected. Satisfactory readings

RM = KV + 1WhereRM = Recommended minimum insulation resistance in megohms at 104° F (40° C) ofthe entire winding.KV = Rated motor terminal to termi

entering the motor. Caution must be exercised, when heating the motor with any source of heat other than self contained space heaters, to raise the wi

being rotated, and the oil rings should be viewed through the viewing ports in the top of the bearing housing to verify free ring rotation. 4. On fan-

Note: Conductors and drain wire must be 20 AWG (American Wire Gage) minimum stranded, tinned copper. Individual conductors must be insulated with PVC,

Check StarterUse the instruction and service manual supplied by the starter manufacturer to verify that the starter has been installed correctly.Whene

Mechanical-Type Starters 1.Check all field wiring connections for tightness, clearance from moving parts, and correct connection. 2.Check the contacto

seconds may be chosen as needed (typically 20 to 30 seconds are used).When the timer has been set, check that the starter (with relay 1CR closed) goes

ContentsTorque All Gasketed Joints Check Machine Tightness Refrigerant TracerLeak Test MachineStanding Vacuum TestMachine DehydrationInspect Water Pip

Oil Charge If oil is added, it must meet Carrier’s specification for centrifugal compressor usage as described in the Scheduled Maintenance, Oil Speci

power the heater and the control circuit. This set up allows the heater to energize when the main motor circuit breaker is off for service work or ext

Input the Design Set Points Access the LID set point screen and view/modify the base demand limit set point, and either the LCW set point or the ECW s

Input Service ConfigurationsThe following configurations require the LID screen to be in the Service portion of the menu. • password• input time and d

Change LID Configuration If NecessaryThe LID Configuration screen is used to view or modify the LID CCN address, change to English or SI units, and to

Configure SERVICE1 Table Access Service1 table to modify/view the following to jobsite parameters: *Open-drive machines only.Note: Other values are le

If, after configuring a value for these points, surge prevention is operating too soon or too late for conditions, these parameters should be changed

Suction Temperature: 42 F (5.6 C) = 37 psig (255 kPa) saturated refrigerant pressure (HFC-134a)Condensing Temperature: 98 F (36.7 C) = 120 psig (1827

Calculate Minimum Load To calculate minimum load conditions, estimate the temperature difference that the cooler will have at 20% load, then estimate

If surge prevention occurs too soon or too late:Modify Equipment Configuration If NecessaryThe Equipment Configuration table has tables to select and

ContentsCheck StarterMechanical-Type Starters Solid-State Starters Oil ChargePower Up the Controls and Check the Oil Heater Software Version Set Up Ma

Owner-Modified CCN TablesThe following tables are described for reference only. Occdef Table Modifications — The Occdef tables contain the Local and C

that the value appearing on the LID is calibrated to the incoming power voltage reading. Voltage can be calibrated only to between 90 and 100 percent

When the test is finished, or the EXIT softkey is pressed, the test will be stopped and the Control Test menu will be displayed. If a specific automat

Check Pumpout System Controls and Optional Pumpout Compressor Controls include an on/off switch, a 3-amp fuse, the compressor overloads, an internal t

Charge Refrigerant into MachineThe 17/19EX machine may have the refrigerant already charged in the utility vessels. If machine is not shipped fully ch

the refrigerant charging valve, (Figure 7 and Figure 8) or to the pumpout charging connection. First evacuate the nitrogen holding charge from the ves

Initial Start-UpPreparationBefore starting the machine, check that the: 1.Power is on to the main starter, oil pump relay, tower fan starter, oil heat

8. Press RELEASE to automate the chiller start/stop value on the Status01 screen to enable the chiller to start. The initial factory setting of this v

3. Press ENTER to override the automatic target. The screen will now read a value of zero, and the word ‘‘SUPVSR!’’ will flash.4. Press the SELECT sof

Check Rotation (Open-Drive Motor)Open Drive Motor Initial Start-Up Initial Uncoupled Start-UpThe initial start-up of the motor should be made with the

ContentsModify Equipment Configuration If NecessaryCheck Voltage SupplyPerform an Automated Control Test Check Pumpout System Controls and Optional Pu

If the bearing temperature rises and motor operation appears to be normal, operation should continue until the bearing temperatures stabilize. Recomme

3. Any abnormal noise or vibration should be immediately investigated and corrected. Increased vibration (with the motor uncoupled from its load) can

Initial Coupled Start-Up After initial uncoupled start-up, the following steps should be taken to ensure safe coupled operation: 1. Follow the procedu

5. Carefully observe the vibration of the bearing housing and any abnormal noise generator.Note that motor vibration may not be identical to the uncou

If the motor is of TEWAC (Totally Enclosed Water-to-Air Cooled) design, the maximum inlet water temperature and the water flow rate (GPM) at the air c

Check Oil Pressure and Compressor Stop 1.When the motor is up to full speed, note the differential oil pressure reading on the LID default screen. It

RLA by manually overriding the guide vane target value on the LID and setting the chilled water set point to a low value. Do not exceed 105% of the na

Hot Alignment Check for Open-Drive MachinesAlignment of compressor with heat exchangers, gear, and driver may be affected by the operating temperature

Check Machine Operating ConditionCheck to be sure that machine temperatures, pressures, water flows, and oil and refrigerant levels indicate that the

Motor Compressor Assembly Guide vane actuator, transmission, motor cooling system, oil cooling system, temperature and pressure sensors, oil sight gla

ContentsCheck Oil Pressure and Compressor StopCalibrate Motor Current Demand Setting To Prevent Accidental Start-UpHot Alignment Check for Open-Drive

Safety Devices and ProceduresElectrical disconnects, relief device inspection, and handling refrigerant. Check Operator KnowledgeStart, stop, and shut

Prepare the Machine for Start-UpFollow the steps described in the Initial Start-Up section.To Start the Machine1.Start the water pumps, if they are no

At shutdown, oil level should be halfway in the lower sight glass. 4. The oil pressure should be between 18 and 30 psi (124 to 207 kPa) differential,

based on kW rate or temperature rate. It is accessed on the Equipment Configuration menu Config screen (Table 2, Example 5). 9. On open-drive machines

After Limited ShutdownNo special preparations should be necessary. Follow the regular preliminary checks and starting procedures. Control Power must b

Check the cooler pressure on the LID default screen, and compare to the original holding charge that was left in the machine. If (after adjusting for

fully closed, 100% is fully open. To release the guide vanes to AUTOMATIC mode, press the RELEASE softkey.Note: Manual control will increase the guide

Pumpout and Refrigerant Transfer ProceduresPreparationThe 17/19EX may come equipped with an optional pumpout compressor. The refrigerant can be pumped

To Read Refrigerant Pressures during pumpout or leak testing:1.The LID display on the machine control center is suitable for determining refrigerant-s

Transferring Refrigerant from Normal Operation into the Utility VesselThese steps describe the method of moving refrigerant from the cooler/condenser/

ContentsReview MaintenanceSafety Devices and ProceduresCheck Operator KnowledgeReview the Start-Up, Operation, and Maintenance ManualOperating Instruc

d. When all liquid has been pushed into the utility vessel, close the cooler isolation valve 7. e. Access the Control Test, Pumpdown function on the L

Transferring Refrigerant from Normal Operation into the Cooler/Condenser/Compressor SectionThese steps describe the method of moving refrigerant from

b. Valve positions: Close valves 3 and 4, open valves 2 and 5.c. Turn on pumpout condenser water. d. Run the pumpout compressor until the suction reac

Return Refrigerant to Normal Operating Conditions1.Be sure that the vessel that was opened has been evacuated and dehydrated. 2.Access the Control Tes

9. Close valves 1, 3, 5, and 6.10. Continue on with the terminate lockout function on the LID to turn off water pumps and enable the compressor for op

General MaintenanceRefrigerant PropertiesHFC-134a is the standard refrigerant in the 17/19EX. At normal atmospheric pressure, HFC-134a will boil at -1

Adding RefrigerantFollow the procedures described in Charge Refrigerant into Machine section.Removing RefrigerantWhen the optional pumpout system is u

Refrigerant Leak TestingBecause HFC-134a is above atmospheric pressure at room temperature, leak testing can be performed with refrigerant in the mach

Refrigerant TracerUse an environmentally acceptable refrigerant as a tracer for leak test procedures.To Pressurize with Dry NitrogenAnother method of

pressure reaches test level. Do not exceed 140 psig (965 kPa). 5. Close the charging valve on the machine. Remove the copper tube if no longer require

DO NOT VENT refrigerant relief valves within a building. Outlet from rupture disc or relief valve must be vented outdoors in accordance with the lates

ContentsPumpout and Refrigerant Transfer ProceduresPreparationOperating the Optional Pumpout CompressorTo Read Refrigerant Pressures Transferring Refr

Contact Seal Maintenance (Open-Drive Machines) (Refer to Figure 36)During machine operation, a few drops of oil per minute normally seeps through the

Seal Disassembly (Figure 36)Contact seal disassembly and repair should be performed only by well qualified compressor maintenance personnel. These dis

11. Place contact sleeve in a protected area to avoid damage to lapped face. 12. Remove outer carbon ring (Item 17). Handle carefully. 13. Remove spra

Seal Reassembly (Figure 36) Be sure that all gasket surfaces are clean and that all holes, including oil holes, are properly aligned between gasket an

9. Place outer spring (Item 15) over sleeve. 10. Separately assemble seal housing cover (Item 2), packing gland gasket (Item 13), packing gland (Item

Machine Alignment (Open-Drive Machines) Alignment Methods There are several established procedures for aligning shafts. The dial indicator method is p

2. Follow the alignment sequence specified in the Near Final Alignment section. 3. All alignment work is performed on gear and drive equipment. Once t

Note: Drive shaft end-float at final drive position must not allow coupling hub faces to contact, or the coupling shroud to bind.Preliminary Alignment

Near Final AlignmentOnce the machine components are within dial indicator range, the adjustments for misalignment should be made in a specific sequenc

3. Angular in plan —This position can easily be lost if placed ahead of the two adjustments in elevation.4. Parallel in plan — This adjustment cannot

ContentsTest After Service, Repair, or Major LeakRefrigerant Tracer To Pressurize with Dry Nitrogen Repair the Leak, Retest, and Apply Standing Vacuum

Correcting Angular Misalignment Preparation — Shaft angular misalignment is measured on the face of the coupling hubs or on brackets attached to each

Measurement — Occasionally, coupling faces may not be perfectly true, or may have been damaged in handling. To compensate for any such runout, determi

or to a burr or other damage to the coupling face.If the larger opening remains the same, and remains on the same side, the amount is entirely shaft (

Adjustment — Having obtained the net misalignment, the amount by which the equipment must be moved can now be calculated.To determine:S — amount of mo

If the larger opening between coupling faces is at the top, place .072 in. of shim under each rear foot or remove .072 in. from the front footings to

5. Tighten the holddown bolts and recheck the indicator. If the reading has changed, loosen the three bolts and readjust. It may be necessary to over

points side to side in a similar manner when checking for misalignment in plan.Measurement — With dial set at zero in the top position, rotate the sha

Final AlignmentThe procedures and tolerance requirements for final alignment are the same as those de-scribed in the Near Final Alignment section. Fin

Disassembled Couplings1. Shut down machine. 2. With machine hot, quickly disassemble couplings. 3. Check angular and parallel alignment in plan and el

Assembled CouplingsIf there is room on the shaft between coupling and component to clamp a sturdy bracket, the arrangement illustrated in Figure 43 ma

ContentsWeekly MaintenanceCheck the Lubrication SystemScheduled MaintenanceService OntimeInspect the Control Center Check Safety and Operating Control

Doweling Techniques After hot alignment check has been completed, the compressor, gear and drive must be doweled to their soleplates. Doweling permits

Weekly MaintenanceCheck the Lubrication SystemMark the oil level on the reservoir sight glass, and observe the level each week while the machine is sh

off. The LID Status02 screen displays whether the heater is energized or not. If the PIC shows that the heater is energized, but the sump is not heati

Scheduled Maintenance Establish a regular maintenance schedule based on the actual machine requirements such as machine load, run hours, and water qua

Check Safety and Operating Controls MonthlyTo ensure machine protection, the Control Test Automated Test should be done at least once per month. See T

indicated. Screw the assembly into the locking ring. 8. Evacuate the filter/piping assembly.9. Open the isolation valves.FA Style Compressors1. Turn o

8. Turn on oil heater and warm the oil to 140 to 150 F (60 to 66 C). Operate the oil pump for 2 minutes. Add oil if required to keep level up to lower

To Change the Oil1.Open the control and oil heater circuit breaker.2.Drain the oil reservoir by opening the oil charging valve, (Figure 2, Item 18 or

vessel. A moisture indicating sight glass is located beyond this filter to indicate the volume and moisture in the refrigerant. If the dry-eye indicat

effects of overpressure. To ensure against damage to the equipment and possible injury to personnel, these devices must be kept in peak operating cond

ContentsInspect Refrigerant Float SystemInspect Relief Valves and PipingCoupling Maintenance (Open-Drive Machines)Procedure Motor Maintenance (Open-Dr

spacer with 8 oz. of Kop-Flex KHP high performance coupling grease (Carrier Part No. 17DK 680 001). Install new gaskets. When the coupling assembly is

repair, recondition, or rebuild the motor, it is recommended that the nearest Westinghouse apparatus repair facility be consulted. In addition to a da

air-to-air heat exchanger of TEAAC motors should be cleaned using a supplied tube brush having synthetic fiber bristles (not wire of any type). The st

ducts through the stator core and by reducing heat transfer from the winding insulation surfaces to the cooling air. Conducting contaminants can chang

solvent such as inhibited methyl chloroform may be used, but must be used sparingly and immediately removed. While this solvent is non-flammable under

Sleeve Bearings Oil Changing The oil reservoirs of the self lubricated bearings should be drained and refilled every 6 months. More frequent changes m

The following is the recommended procedure for removing the bearing sleeve:1. Remove the oil drain plug in the housing bottom and drain the oil sump.2

reassemble them to avoid any mix up in parts or damage to the surfaces at the partings.7. When removing the labyrinth seals, make note of the position

10. Protect the shaft journal by wrapping it with clean, heavy paper or cardboard. ReassemblyBearing reassembly is basically a reversal of the disasse

1. The interior of the bearing housing should be cleaned and then flushed with clean oil or kerosene. 2. The bearing halves and the shaft journal shou

ContentsInspect the Starting Equipment Check Pressure TransducersPumpout System Maintenance Optional Pumpout Compressor Oil ChargePumpout Safety Contr

3. All parts should be carefully inspected for nicks, scratches, etc., in any contact surfaces. Such imperfections should be removed by an appropriate

straightness and make any corrections required. Do not force the ring halves together. Excessive force may alter the roundness or flatness of the ring

If the bearing cap does not seat completely, remove and reset the floating labyrinth seal position. When installing upper bearing cap the floating lab

Open-Drive Motor Handling/RiggingEach motor is provided with lifting lugs, welded to the four corners of the motor frame, for lifting the assembled ma

Note: Refer to weights specified on certified drawing to determine proper lifting equipment required for specific components or assemblies.Open-Drive

should be energized at the voltage shown by the space heater nameplate attached to the motor. Incandescent light bulbs can be placed within the motor

Compressor Bearing and Gear MaintenanceThe key to good bearing and gear maintenance is proper lubrication. Use the proper grade of oil, maintained at

CondenserSince this water circuit is usually an open-type system, the tubes may be subject to contamination and scale. Clean the condenser tubes with

Water LeaksWater is indicated during machine operation by the refrigerant moisture indicator (Figure 2) on the refrigerant motor cooling line. Water l

Inspect the Starting EquipmentBefore working on any starter, shut off the machine, and open all disconnects supplying power to the starter.CAUTIONCAUT

ContentsChecking Pressure Transducers Oil Differential Pressure/Power Supply Module CalibrationTroubleshooting Transducers Transducer Replacement Cont

Inspect starter contact surfaces for wear or pitting on mechanical-type starters. Do not sandpaper or file silver-plated contacts. Follow the starter

Check Pressure TransducersOnce a year, the pressure transducers should be checked against a pressure gage reading. Check all three transducers: oil pr

Oil should be visible in the compressor sight glass both during operation and at shutdown. Always check the oil level before operating the compressor.

Ordering Replacement Chiller PartsWhen ordering Carrier specified parts, the following information must accompany an order: • machine model number and

Troubleshooting GuideOverviewThe PIC has many features to aid the operator and the technician in troubleshooting a 17/19EX machine.• By using t

Checking the Display Messages The first area to check when troubleshooting the 17/19EX is the LID display. If the alarm light is flashing, check the p

Resistance CheckTurn off the control power and disconnect the terminal plug of the sensor in question from the module. Measure sensor resistance betwe

Check Sensor AccuracyPlace the sensor in a medium of a known temperature and compare that temperature to the measured reading. The thermometer used to

Checking Pressure TransducersThere are 3 pressure transducers on hermetic machines. These determine cooler, condenser, and oil pressure. Open-drive ma

To calibrate oil pressure differential on open-drive machines, refer to Oil Pressure Differential Calibration at the end of this section. Calibration

ContentsStarter Management Module (SMM) Inputs Outputs Options Modules (8-Input)Replacing Defective Processor ModulesInstallation of New PSIO Module17

from the transducer by the supply voltage signal, measured at the PSIO terminals J7-J34 and J7-J35. For example, the condenser transducer voltage inpu

Oil Differential Pressure/Power Supply Module Calibration (See Figure 48.) The oil reservoir in the 17EX machine is not common to cooler pressure. The

Troubleshooting TransducersWhen troubleshooting transducers, keep the negative lead of your voltohmmeter on terminal U4 of the power supply (or termin

Control Algorithms Checkout ProcedureIn the LID Service menu, one of the tables is Control Algorithm Status. This table contains 6 tables that may be

Control Test The Control Test feature can check all of the thermistor temperature sensors, including those on the Options modules, pressure transducer

Click here for Table 8C — In Recycle ShutdownClick here for Table 8D — Pre-Start AlertsClick here for Table 8E — Normal or Auto.-RestartClick here for

Click here for Table 8I — Normal Run Overrides Active (Alerts)Click here for Table 8J — Out-of-Range Sensor FailuresClick here for Table 8K — Machine

Control ModulesThe Processor module (PSIO), 8-input (Options) modules, Starter Management Module (SMM), and the Local Interface Device (LID) module pe

Red LEDIf the LED is blinking continuously at a 2-second rate, it is indicating proper operation. If it is lit continuously it indicates a problem req

PSIO Module Green LED Closest to Communications Connection — Communication with SMM and 8-input module; must blink continuously. Other Green LED — Com

ContentsList of TablesTable 1 — Major PIC Components and Panel LocationsTable 2 — LID ScreensExample 1 — Status01 Display ScreenExample 2 — Status02 D

Notes on Module Operation 1.The machine operator monitors and modifies configurations in the microprocessor through the 4 softkeys and the LID. Commun

If all modules indicate communications failure, check communications plug on the PSIO module for proper seating. Also check the wiring (CCN bus — 1:re

Processor Module (PSIO) (Figure 51) InputsEach input channel has 3 terminals; only 2 of the terminals are used. Application of machine determines whic

Starter Management Module (SMM) (Figure 52) InputsInputs on strips J2 and J3 are a mix of analog and discrete (on/off) inputs. Application of the mach

Options Modules (8-Input)The options modules are optional additions to the PIC, and are used to add temperature reset inputs, spare sensor inputs, and

Terminal block connections are provided on the options modules. All sensor inputs are field wired and installed. Options module 1 can be factory or fi

Installation of New PSIO Module1.Verify if the existing PSIO module is defective, by using the procedure described in the Notes on Module Operation se

5. Package the defective module in the carton of the new module for return to Carrier.6. Restore control system power (LID will show ‘‘COMMUNICATION F

14. After the PSIO tables have been uploaded into the LID, access the STATUS01 screen. Move the highlight bar to the ‘‘TOTAL COMPRESSOR STARTS’’ value

17/19EX Physical Data and Wiring Schematics Table 10, Table 11, Table 12, Table 13, Table 14, Table 15, Table 16, Table 17, Table 18, Figure 54, Figur

ContentsTable 3 — Protective Safety Limits and Control SettingsTable 4 — Capacity OverridesTable 5A — HFC-134a Pressure — Temperature (F)Table 5B — HF

Compressor Fits and Clearances Service and repair of Carrier centrifugal compressors should be performed only by fully trained and qualified service p

Click here for Table 17 — Open-Drive Compressor Fits and ClearancesClick here for Figure 56 — Hermetic Compressor Fits and ClearancesClick here for Ta

Click here for Figure 60 — Hermetic Drive — Power Panel With Water-Cooled Oil CoolerClick here for Figure 61 — Hermetic Drive — Power Panel With Motor

* See Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12, and Figure 13.Table 1 — Major PIC Components and Panel Locations*PIC Component P

Table 2 — LID ScreensNotes:1.Only 12 lines of information appear on the LID screen at any given time. Press NEXT or PREVIOUS to highlight a point or t

Note: All values are variables available for read operation to a CCN. Descriptions shown with (*) support write operations for BEST programming langua

Example 2 — Status02 Display ScreenTo access this display from the LID default screen:1. Press MENU.2. Press STATUS.3. Scroll down to highlight STATUS

Example 3 — Status03 Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press STATUS.3. Scroll down to highlight STATU

Example 4 — Setpoint Display ScreenTo access this display from the LID default screen:1. Press MENU.2. Press SETPOINT. Table 2, Example 4 — Setpoint

Example 5 — Configuration (Config) Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press SERVICE.3. Scroll down to

ContentsTable 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides (Continued)H. Normal Run with Reset,

Example 6 — Lead/Lag Configuration Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press SERVICE.3. Scroll down to

Example 7 — Service1 Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press SERVICE.3. Scroll down to highlight EQUI

Note:∆ = delta degrees. * Information is applicable to hermetic machines only. † Information is applicable to open-drive machines only.Demand Limit So

Example 8 — Service2 Display ScreenTo access this display from the LID default screen:1. Press MENU.2. Press SERVICE.3. Scroll down to highlight EQUIP

Note: This screen provides the means to generate alert messages based on exceeding the ‘‘Temp’’ thresh-old for each point listed. If the ‘‘Enable’’ is

Example 9 — Service3 Display ScreenTo access this display from the LID default screen:1. Press MENU.2. Press SERVICE.3. Scroll down to highlight EQUIP

Example 10 — Maintenance (Maint01) Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press SERVICE.3. Scroll down to

Example 11 — Maintenance (Maint02) Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press SERVICE.3. Scroll down to

Example 12 — Maintenance (Maint03) Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press SERVICE.3. Scroll down to

Example 13 — Maintenance (Maint04) Display ScreenTo access this display from the LID default screen: 1. Press MENU.2. Press SERVICE.3. Scroll down to

DO NOT WELD OR FLAMECUT any refrigerant line or vessel until all refrigerant (liquid and vapor) has been removed from chiller. Traces of vapor should

ContentsTable 14 — Marine Waterbox Cover WeightsTable 15 — NIH Waterbox Cover WeightsTable 16 — Auxiliary Systems, Electrical DataTable 17 — Open-Driv

Table 3 — Protective Safety Limits and Control Settings Monitored Parameter Limit Applicable CommentsTemperature Sensors Out Of Range –40 to 245 F (–4

Flow Switches (Field Supplied) Operate water pumps with machine off. Manually reduce water flow and observe switch for proper cutout. Safety shutdown

LegendP1 — Minimum Pressure Load T1 — Minimum Temperature LoadP2 — Maximum Pressure Load T2 — Maximum Temperature Load* Not available on open drive m

Table 5A — HFC-134a Pressure — Temperature (F) Temperature (F) Pressure (psi)024686.507.528.609.6610.79101214161811.9613.1714.4215.7217.062022242628

9092949698104.40108.18112.06116.02120.08100102104106108124.23128.47132.81137.25141.79110112114116118146.43151.17156.01160.96166.01120122124126128171.1

Table 5B — HFC-134a Pressure — Temperature (C) Temperature (C) Pressure (kPa)-18.0-16.7-15.6-14.4-13.344.851.959.366.674.4-12.2-11.1-10.0-8.9-7.882.59

26.727.828.930.031.1598.0621.0645.0669.0694.032.233.334.435.636.7720.0746.0773.0800.0828.037.838.940.041.142.2857.0886.0916.0946.0978.043.344.445.646.

* Torque values based upon dry friction.Table 6 — Recommended Torque Bolt size 1/4” 5/16” 3/8” 1/2” 5/8” 3/4” 7/8” 1” 1 1/3” 1 1/2”GradeSAE GR 5Torque

Table 7 — Control Test Menu Functions Tests To Be Performed Devices Tested1. Automated Tests*2. PSIO Thermistors3. Options Thermistors4. Transducers5.

* During any of the tests that are not automated, an out-of-range reading will have an asterisk (*) next to the reading and a message will be displaye

ContentsList of FiguresFigure 1 — 17/19EX IdentificationFigure 2 — Typical 17EX InstallationFigure 3 — Typical 19EX InstallationFigure 4 — Refrigerant

LEGEND For Table 8, A - N 1CR AUX — Compressor Start Contact OILPD — Oil Pressure CA P — Compressor Current OILT — Oil Sump Temperature

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides B. Timing Out or Timed OutPrimary Message Se

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting GuidesC. In Recycle ShutdownPrimary Message Seco

* [LIMIT] is shown on the LID as temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or alar

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides E. Normal or AUTO.-RESTARTPrimary Message S

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides F. Start-Up Failures: This is an alarm condit

* [LIMIT] is shown on the LID as temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or alar

* [LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting GuidesH. Normal Run with Reset, Temperature, Or Dem

* [LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or

ContentsFigure 13 — Power Panel with Options (Hermetic Machine Shown)Figure 14 — LID Default ScreenFigure 15 — LID Service ScreenFigure 16 — 17/19EX M

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting GuidesJ. Out-of-Range Sensor FailuresPrimary Message

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting GuidesK. Machine Protect Limit Faults Primary Messag

Protective LimitNo Motor Current CA P Loss of Motor Cur-rent: Check sensor. Check wiring: Check torque setting on solid-state starter. Check for main

* [LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting GuidesL. Machine Alerts Primary Message Secondary Me

* [LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting GuidesM. Spare Sensor Alert MessagesPrimary Message

Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides N. Other Problems/Malfunctions Description Re

SMM Communications FailureCheck that PSIO communication plugs are connected correctly. Check SMM communi-cation plug. Check for proper SMM power suppl

Table 9A — Thermistor Temperature (F) vs Resistance/Voltage Drop Temperature (F)Voltage Drop (V)Resistance (Ohms)Temperature (F)Voltage Drop (V)Resist

ContentsFigure 27 — Shipping Bolt on Open Drive MotorFigure 28 — 17/19EX Leak Test ProceduresFigure 29 — Dehydration Cold TrapFigure 30 — Correct Moto

1251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661.6071.5851.5621.5381.51

Table 9B — Thermistor Temperature (C) vs Resistance/Voltage Drop Temperature (C)Voltage Drop (V)Resistance (Ohms)Temperature (C)Voltage Drop (V)Resist

52535455565758596061626364656667686970717273747576777879808182831.5941.5531.5131.4741.4361.3991.3631.3271.2911.2581.2251.1921.1601.1291.0991.0691.0401

* If a machine configuration other than 2-pass, 150 psig (1034 kPa), NIH waterbox configuration is used, refer to the Additional Cooler Weights or Add

* If a machine configuration other than 2-pass, 150 psig (1034 kPa), NIH waterbox configuration is used, refer to the Additional Cooler Weights or Add

NIH — Nozzle-In-Head † Subtract 228 lb (103 kg) from the rigging weight shown in Table 10.* When using a machine configuration other than 2-pass, NIH

* Based on 4160 v, FD motor. † Based on 6900 v, DQ motor. ** Based on 6900 v, DP motor. †† Based on 6900 v, EE motor. * Based on 3300 v, FD motor. † B

NIH — Nozzle-In-Head * When using a machine configuration other than 2-pass, NIH waterboxes with 150 psig (1038 kPa) covers, add the weights listed in

* Heat exchangers with marine waterboxes have heavier dry and operating weights than heat exchangers with nozzle-in-head waterboxes.Table 14 — Marine

NIH — Nozzle-in-Head * The 150 psig (1034 kPa) waterbox cover weights are included in the dry weight shown in Table 10. † Two different waterbox cove

ContentsFigure 41 — Adjusting Angular Misalignment in PlanFigure 42 — Correcting Parallel MisalignmentFigure 43 — Alignment Check — Assembled Coupling

LegendFLA — Full Load Amps LRA — Locked Rotor Amps Notes:1. The oil pump is powered through a field wiring terminal into the power panel.2. Power to t

Table 17 — Open-Drive Compressor Fits and Clearances ItemDescriptionClearanceType of Measure17FA4 17FA5Min Max Min Maxin. mm in. mm. in. mm in. mm11s

See Figure 55 for item callouts.16Drive-end journal bearing.003 .0762 .005 .1270 .0035 .0889 .0055 .1397 Diametral17Windage baffle to shaft.083 2.108

* Measured with shaft in thrust position (towards suction end); tolerance = ± .005 in. (± .127 mm).Table 17 — Open-Drive Compressor Fits and Clearance

* See Figure 56 for item callouts. † Clearances represent factory tolerances for new components.Table 18 — Hermetic Compressor Fits and ClearancesItem

* Measured with shaft in thrust position (towards suction end); tolerance = ± .005 in. (± .127 mm). † First-stage diameter. ** Second-stage diameter.T

Figure 1 — 17/19EX Identification

Figure 2 — Typical 17EX Installation

Figure 3 — Typical 19EX Installation

Figure 4 — Refrigerant, Motor Cooling, and Oil Cooling Cycles

ContentsFigure 55 — Open-Drive Compressor Fits and ClearancesFigure 56 — Hermetic Compressor Fits and ClearancesFigure 57 — Electronic PIC Controls Wi

vFigure 5 — Hermetic Compressor Lubrication System (EX Compressor Shown)

Figure 6 — Open-Drive (17 Series) Lubrication Cycle

Figure 7 — 17EX Controls and Sensor Locations(Figure 7 continued on next page)Machine Rear; Compressor Side View

Compressor End ViewFigure 7 — 17EX Controls and Sensor Locations(Figure 7 continued on next page)

Machine Front ViewFigure 7 — 17EX Controls and Sensor Locations(Figure 7 continued on next page)

Motor End ViewFigure 7 — 17EX Controls and Sensor Locations(Figure 7 continued on next page)

Figure 7 — 17EX Controls and Sensor Locations

Machine Rear; Compressor Side ViewFigure 8 — 19EX Controls and Sensor Locations(Figure 8 continued on next page)

Compressor End ViewFigure 8 — 19EX Controls and Sensor Locations(Figure 8 continued on next page)

Machine Rear ViewFigure 8 — 19EX Controls and Sensor Locations(Figure 8 continued on next page)

IntroductionPrior to initial start-up of the 17/19EX unit, those involved in the start-up, operation, and maintenance should be thoroughly familiar wi

Motor End ViewFigure 8 — 19EX Controls and Sensor Locations(Figure 8 continued on next page)

Figure 8 — 19EX Controls and Sensor Locations

Figure 9 — Control Center (Front View); Shown with Options Module

Figure 10 — Control Sensors (Temperature)

Figure 11 — Control Sensors (Pressure Transducer, Typical)

Figure 12 — Power Panel without Options (Open-Drive Machine Shown)

Figure 13 — Power Panel with Options (Hermetic Machine Shown)

Figure 14 — LID Default Screen

Figure 15 — LID Service Screen

Figure 16 — 17/19EX Menu Structure

This equipment uses, and can radiate, radio frequency energy. If not installed and used in accordance with the instruction manual, it may cause interf

Figure 17 — 17/19EX Service Menu Structure

Figure 18 — Example of Point Status Screen (Status01)

Figure 19 — Example of Time Schedule Operation Screen

Figure 20 — Example of Set Point Screen

Figure 21 — 17/19EX Hot Gas Bypass/Surge Prevention

Figure 22 — 17/19EX with Default Metric Settings

Figure 23 — Example of Attach to Network Device Screen

Figure 24 — Example of Holiday Period Screen

Figure 25 — Control Sequence

Figure 26 — Typical Wet-Bulb Type Vacuum Indicator

AbbreviationsFrequently used abbreviations in this manual include:CCN — Carrier Comfort Network LCDW — Leaving Condenser WaterCCW — Counterclockwise L

Figure 27 — Shipping Bolt on Open Drive Motor

Figure 28 — 17/19EX Leak Test Procedures

Figure 29 — Dehydration Cold Trap

Figure 30 — Correct Motor Rotation

Figure 31 — Refrigeration Log

Figure 32 — Pumpout Arrangement and Valve Number Locations (12-ft Vessel Shown)(Figure 32 continued on next page)

Figure 32 — Pumpout Arrangement and Valve Number Locations (12-ft Vessel Shown) (Continued)

Figure 33 — Pumpout Unit Wiring Schematic (19EX Shown)

Figure 34 — Optional Pumpout Compressor

Figure 35 — Electronic Vane Actuator Linkage

17/19EX Machine Familiarization (Figure 1, Figure 2, and Figure 3)Machine Identification Label The identification label is located on the right side o

Figure 36 — Compressor Contact Seal (Open-Drive Machines)

Figure 37 — Checking Preliminary Alignment

Figure 38 — Measuring Angular Misalignment in Elevation

Figure 39 — Measuring Angular Misalignment on Brackets

Figure 40 — Alignment Formula

Figure 41 — Adjusting Angular Misalignment in Plan

PreparationFigure 42 — Correcting Parallel Misalignment(Figure 42 continued on next page)

MeasurementFigure 42 — Correcting Parallel Misalignment(Figure 42 continued on next page)

AdjustmentFigure 42 — Correcting Parallel Misalignment

To Check Angular AlignmentFigure 43 — Alignment Check — Assembled Coupling(Figure 43 continued on next page)

gas pressure, loosen the collar and unscrew and discard the valve stem. DO NOT INCINERATE. CHECK THE REFRIGERANT TYPE before adding refrigerant to the

CoolerThis vessel (also known as the evaporator) is located underneath the condenser, next to the utility vessel. The cooler is maintained at lower te

To Check Parallel AlignmentFigure 43 — Alignment Check — Assembled Coupling

Figure 44 — Removing the Oil Filter

Figure 45 — Typical Float Valve Arrangement

Figure 46 — Lifting Open-Drive Motor

Figure 47 — Controls for Optional Pumpout Compressor

Figure 48 — Oil Differential Pressure/Power Supply Module

Figure 49 — PSIO Module LED Locations

Figure 50 — LID Module (Rear View) and LED Locations

Figure 51 — Processor (PSIO) Module

Figure 52 — Starter Management Module (SMM)

Motor Starter (Purchased Separately) The starter allows for the proper starting and disconnecting of the electrical energy for the compressor-motor, o

Switch Setting Options Module 1 Options Module 2S1S26472Figure 53 — Options Module

Figure 54 — Model Number Nomenclature for Compressor Size (See Figure 1 Also)

Note: See Table 17 for dimensionsFigure 55 — Open-Drive Compressor Fits and Clearances(Figure 55 continued on next page)

Figure 55 — Open-Drive Compressor Fits and Clearances(Figure 55 continued on next page)Note: See Table 17 for dimensions

Figure 55 — Open-Drive Compressor Fits and ClearancesNote: See Table 17 for dimensions

View BRefer to Table 18 for dimensionsView AFigure 56 — Hermetic Compressor Fits and Clearances(Figure 56 continued on next page)

Figure 56 — Hermetic Compressor Fits and Clearances

Figure 57 — Electronic PIC Controls Wiring Schematic — Hermetic Machine(Figure 57 continued on next page)

Figure 57 — Electronic PIC Controls Wiring Schematic — Hermetic Machine

Figure 58 — Electronic PIC Controls Wiring Schematic — Open Drive Machine(Figure 58 continued on next page)

Compression raises the refrigerant temperature above that of the water flowing through the condenser tubes. When the warm (typically 98 to 102 F [37 t

Figure 58 — Electronic PIC Controls Wiring Schematic — Open Drive Machine

Figure 59 — Machine Power Panel, Starter Assembly, and Motor Wiring Schematic(Figure 59 continued on next page)

Figure 59 — Machine Power Panel, Starter Assembly, and Motor Wiring Schematic

Figure 60 — Hermetic Drive — Power Panel with Water-Cooled Oil Cooler

Figure 61 — Hermetic Drive — Power Panel with Motor Cooling Solenoid

Figure 62 — Open-Drive — Power Panel

INITIAL START-UP CHECKLIST FOR17/19EX CENTRIFUGAL LIQUID CHILLER(Remove and use for job file.)MACHINE INFORMATION:NAME JOB NO.ADDRESS MODELCITY STATE Z

INSPECT WIRING AND RECORD ELECTRICAL DATA:RATINGS:Motor VoltageMotor(s) Amps Oil Pump Voltage Starter AmpsLine Voltages: Motor Oil Pump Controls/Oil H

17/19EXCENTRIFUGAL LIQUID CHILLERCONFIGURATION SETTINGS LOG(Remove and use for job file.)SET POINT TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEF

LOCAL MODE TIME SCHEDULE CONFIGURATION SHEET OCCPC01SDay Flag Occupied UnoccupiedMTWTF S SH Time TimePeriod 1:Period 2:Period 3:Period 4:Period 5:Peri

Motor/Oil Refrigeration Cooling Cycle The motor is cooled by liquid refrigerant taken from the bottom of the condenser vessel (Figure 4). Flow of refr

CONFIG TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUERESET TYPE 1Degrees Reset at 20 mA–30 to 30(–17 to 17)DEG F(DEG C)10(6)RESET TYPE

LEAD/LAG TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUELEAD/LAG SELECTDISABLE =0, LEAD =1,LAG =2, STANDBY =30, 1, 2, 3 0Load Balance O

SERVICE1 TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUEMotor Temp Override150 to 200(66 to 93)DEG F(DEG C)200(93)Cond Pressure Overrid

SERVICE1 TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUEMotor Rated Load Amps 1 to 9999 AMPS 200Motor Rated Line Voltage 1 to 9999 VOLT

SERVICE2 TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUERESET 20 mA Power Source 0/1 0 = EXTERNAL, 1 = INTERNAL 0DEMAND 20 mA Power Sou

SERVICE3 TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUEProportional Inc Band 2to10 6.5Proportional Dec Band 2to10 6.0Proportional ECW

BROADCAST (BRODEFS) CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUEActivate Yes/No NoOAT BroadcastController Name 8 characters TextBus Number

MACHINE ALIGNMENT REPORTJOB NAME COUPLING SIZEJOB NUMBER TYPEMACHINE SER. NO. WEAR CONDITIONDRIVER TYPE SPACER LENGTHHOT CHECK □ COLD CHECK □COMPRESSO

always a minimum flow bypassing the TXV, which flows through an orifice. The TXV valve regulates flow into the oil/refrigerant plate and frame-type he

Details Oil is charged into the reservoir (Item 1) through a hand valve (Item 4) which also functions as an oil drain. If there is refrigerant in the

As the oil leaves the oil cooler, it passes the oil pressure transducer (Item 14) and then the thermostatic expansion valve bulb (Item 13). The oil fl

During the machine start-up, the PIC will energize the oil pump and provide 15 seconds of prelubrication to the bearings after the oil pressure is ver

Open-Drive Machines (17 Series) Lubrication CycleSummaryThe main oil pump and oil reservoir are contained in the compressor base. Oil is pumped throug

Water flow through the oil cooler is manually adjusted by a plug valve (Item 9) to maintain the oil at an operating temperature of approximately 145 F

CAUTIONCAUTION!DO NOT STEP on refrigerant lines. Broken lines can whip about and cause per-sonal injury.DO NOT climb over a machine. Use platform, cat

StartersAll starters, whether supplied by Carrier or the customer, must meet Carrier Starter Specification Z-375. This specification can be obtained f

Volatile MemoryVolatile memory is memory incapable of being sustained if power is lost and subsequently restored.GeneralThe 17/19EX hermetic centrifug

PIC System Components The Product Integrated Control (PIC) is the control system on the machine. See Table 1. The PIC controls the operation of the ma

The PIC consists of 3 modules housed inside the 3 major components. The component names and the control voltage contained in each component are listed

These inputs are connected to the PSIO module. The PSIO also provides outputs to the: guide vane actuator; oil pump; oil heater; hot gas bypass (optio

6-Pack Relay BoardThis device is a cluster of 6 pilot relays located in the control center. It is energized by the PSIO for the oil pump, oil heater,

Hot Gas Bypass Contactor Relay (3C) (Optional)This relay, located in the power panel, controls the opening of the hot gas bypass valve. The PIC energi

pressure and outputs the difference as an oil differential pressure signal to the PSIO. The PSIO converts this signal to differential oil pressure. To

LID Operation and Menus (Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, and Figure 20) General • The LID display will automatically

Alarms and Alerts Alarm (*) and alert (!) status are indicated on the Default screen and the Status tables. An alarm (*) will shut down the compressor

CAUTIONCAUTION!PERIODICALLY INSPECT all valves, fittings, and piping for corrosion, rust, leaks, or damage.PROVIDE A DRAIN connection in the vent line

LID Default Screen Menu Items To perform any of the operations described below, the PIC must be powered up and have successfully completed its self te

Menu Structure To perform any of the operations described below, the PIC must be powered up and have successfully completed its self test.• Press MENU

• Press SELECT to access the highlighted point.• Press QUIT to leave the selected decision or field without saving any changes.• Or, press ENTER to le

To View or Change Point Status (Figure 18) Point Status is the actual value of all of the temperatures, pressures, relays, and actuators sensed and co

3. Press SELECT to view the desired Point Status table.4. On the Point Status table press NEXT or PREVIOUS until desired point is displayed on the scr

For Analog Points — Press INCREASE or DECREASE to select the desired value.5. Press ENTER to register new value.Override Operations Note: When overrid

To Remove an Override 1. On the Point Status table press NEXT or PREVIOUS to highlight the desired point.2. Press SELECT to access the highlighted poi

Override Indication An override value is indicated by ‘‘SUPVSR,’’ ‘‘SERVC,’’ or ‘‘BEST’’ flashing next to the point value on the Status table.To View

3. Press SELECT to access and view the time schedule.4. Press NEXT or PREVIOUS to highlight the desired period or override that you wish to change.5.

6.a. Press INCREASE or DECREASE to change the time values. Override values are in one-hour increments, up to 4 hours.b. Press ENABLE to select days in

ContentsList of TablesList of FiguresSafety ConsiderationsIntroduction Abbreviations17/19EX Machine FamiliarizationMachine Identification Label System

8. Press EXIT to leave the period or override.9. Either return to Step 4 to select another period or override, or press EXIT again to leave the curren

To View and Change Set Points (Figure 20)1.To view the Set Point table, at the Menu screen press SETPOINT.2.There are 4 set points on this screen: Ba

4. Press SELECT to modify the highlighted set point.5. Press INCREASE or DECREASE to change the selected set point value.6. Press ENTER to save the ch

Table 2 — LID ScreensExample 1 — Status01 Display ScreenExample 2 — Status02 Display ScreenExample 3 — Status03 Display ScreenExample 4 — Setpoint Dis

PIC System FunctionsNote:Throughout this manual, words printed in capital letters and italics are values that may be viewed on the LID. See Table 2 fo

DeadbandThis is the tolerance on the chilled water/ brine temperature CONTROL POINT. If the water temperature goes outside of the DEADBAND, the PIC op

vane response to chilled water temperature below deadband plus control point. It can be adjusted on the LID from a setting of 2 to 10, and the default

The chiller also maintains a start-to-start timer and a stop-to-start timer. These timers limit how soon the machine can be started. See the Start-Up/

Note: This schedule is for illustration only, and is not intended to be a recommended schedule for chiller operation. Whenever the chiller is in the L

Safety ControlsThe PIC monitors all safety control inputs, and if required, shuts down the machine or limits the guide vanes to protect the machine fr

ContentsRefrigeration Cycle Motor/Oil Refrigeration Cooling Cycle Hermetic Machines (19 Series) Lubrication CycleSummaryDetailsOpen-Drive Machines (17

If the controller initiates a safety shutdown, it displays the fault on the LID with a primary and a secondary message, and energizes an alarm relay i

Default Screen FreezeWhenever an alarm occurs, the LID default screen will freeze displaying the condition of the machine at the time of alarm. Knowle

alert threshold (18 psid [124 kPa]). Once running, the auxiliary oil pump will remain on until the compressor is turned off and will deenergize with t

There are 2 methods of ramp loading with the PIC. Ramp loading can be based on chilled water temperature or on motor load. 1. Temperature ramp loading

Whenever the motor current demand limit set point is reached, it activates a capacity override, again with a 2-step process. Exceeding 110% of the rat

Oil Sump Temperature Control The oil sump temperature control is regulated by the PIC which uses the oil heater relay when the machine is shut down. A

Oil Cooler The oil must be cooled when the compressor is running.EX Compressors: This is accomplished through a small, plate-type heat exchanger. The

Automatic Restart After a Power Failure is not activated when a power failure occurs, and the remote contact is closed, the machine will indicate an a

Condenser Pump Control The machine will monitor the CONDENSER PRESSURE and may turn on this pump if the pressure becomes too high whenever the compres

CONDENSER FREEZE POINT, then the CONDENSER WATER PUMP shall be energized until the CONDENSER REFRIG TEMP is greater than the CONDENSER FREEZE POINT pl

ContentsGeneral PIC System ComponentsProcessor Module (PSIO)Starter Management Module (SMM) Local Interface Device (LID) 6-Pack Relay Board8-Input Mod

Auto. Restart After Power Failure This option may be enabled or disabled, and may be viewed/modified in the Config table of Equipment Configuration. I

Water/Brine ResetThree types of chilled water or brine reset are available and can be viewed or modified on the Equipment Configuration table Config s

automatic reset to the set point based on a temperature sensor wired to the number one 8-input module (see wiring diagrams or certified drawings). The

Demand Limit Control, Option (Requires Optional 8-Input Module)The demand limit may be externally controlled with a 4 to 20 mA signal from an energy m

Points, (T1/P1;T2/P2). These points have default settings as defined on the Service1 table, or on Table 4. These settings and the algorithm function a

Surge Protection Surging of the compressor can be determined by the PIC through operator configured settings. Surge will cause amperage fluctuations o

Lead/Lag Control Lead/Lag is a control system process that automatically starts and stops a lag or second chiller in a 2-chiller water system. Refer t

Common Point Sensor InstallationLead/lag operation does not require a common chilled water point sensor. Common point sensors can be added to the 8-in

Machine Communication WiringRefer to the machine’s Installation Instructions and Carrier Comfort Network Interface section for information on machine

If the address assignments placed into the LAG ADDRESS and STANDBY ADDRESS values conflict, the lead/lag will be disabled and an alert (!) message wil